Oven attachment



July 6 M 'DOUGA LD DEXTER ovn'n ATTACHMENT r'n d Oct 1, 1923 I I I mmutol Mam. Dam-e.

Patented July 6,1926; 7

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MA D GALD nnxrnnp orgoonulyrnusyenonera ovniv- A A-CEM T;

' Application filed October-1 1923. Serial No. 665,930.

My invention relates to an oven .attach-. ment more particularly adapted for use in the"ovens-.of gas and oil burning stoves, wherein the products of combustion aread mitted, usually atv difierent: levels, into the oven and are-taken out-through one or more setso'l ports-at or near the top of the oven.

Theobject'of my invention is toprovide a heat intercepting 'baflle plate which can be readily inserted in and removed from the oven and which in position wil l intercept and direct all of the heat; intonthe oven be'low-it,.thus concentrating thehea-t-in .an oven space of relatively smallcubic contents as'comparedwith'the whol'e oven tothe end-that great economyin the consumption of fuel to'heat the reduced oven space is obtained and a more rapid. and eflicientcooking action results from the bringing of the heat radiating surfaces forming the top and bottornof the oven spacein close proximity both below and overhead to the article being cooked. Sucha general objectwas contemplated in' LettersPatent' issued .to myself and J. L. Duke,yN 0. 1,082,414, but. the construction therein shown required change or special design in the ;oven..

a It is particularly an object of my present invention todesign the heat intercepting bafile so that it maybe used as an attachmentwith any standard make ofoven andwithout modification or change in such oven. My invention turthercomprises the novel details of construction and arran ement of parts, which in their preferre fembodi: ments are illustrated in-theaccompanying drawings, which form a part of this specification,and in which z y Fig. 1 is a vertical cross-sectional view through a typical gas stove'oven, the tull lar parts throughout the drawings.

. I have shown my invention in use with an oven of a gas burning stove which is conventionally illustrated and is typical of the ovenrof. a r y gaseous .or 'liqued fuel burning stove-. u H a -A's, shown, the oven comprisesfside Walls 1 having upper and loweroppositely disposed pa-irs. ofi transverse heatinlet ports .2

and 3. .A vertical-flue-"t' is dispQsedoneachside of theoven walls 1 and these flues'freceive the 'productsof combustion from; the

burners .5, which productsflow along and pass about each side, 0t the; oven bottom 6; The .flues serve tov conduct theheatto. the ports2 and 3, 01. 0111. totheportsByas: will be later." described.- he oven'is enclosed i outer side walls 7 connected overhead to a top wall;8 which provides "a flue space 9-between it and the,topwallflQot the oven proper. The products; of combustion gain: access to the oven throughiitslports 2 and 3 oneach side, are carriedofi throughytopQports-fll into thespace 9 and thence escape through the outlet flue 12; flhe oven walls 1 are pro vijded with the customary rack guides 13 for the rack ll which supports the cookingv'ea sels. The oven as thus far described forms no particular part of invention, being merelytypical of any oven of this char:

acter..

. In the embodiment of my invention illustrated in F ig. 1, the; heat intercepting baflle plate is formedby two plates -15- having their inner edges overlapped and hinged and. having theirouterendstapered at=.1 7:so.as to correspond substantially. .to the cross sec 'tion of the lieat..flues Each -oiathe plates has hookl-ike members 185 at .each side which are. adapted to be engaged over lthenracl'z guides 13 im'mediately above the port 2} or 3. These'members lS'may, if desirechbe formed by bending back each tapered side edge 17 over upon itself and then upwardly and outwardly to form the rackjguide engaging supports. It will be noted that one of the hinged sections is elongated to overlap the other to provide a stop'extension 19 which will prevent the plate joint from breaking below a'horizontal plane." In applying-this form of my invention, the plate I joint is broken upwardly, thus drawing the ends 17 and hook members 18' inwardly to a width which will permit the baflle plate being inserted into the oven and then its hook members 18 are causedto engage thedesired guides 13 as theplate joint is forced downwardly so as to expand the tapered arm ends 17' of the plates until-they pass through,

the openings 2 or 3 and engage the outer fit) fine walls of the fines 41 and thus intercept the heat tending to rise in the vflues at the plate level and divert it horizontally into the oven space below the'plate. The baffle plate is provided with one or more suitably disposed holes 20 through which. the-.heatescapes into the uppermost part of the oven and thence to the flue l2. v

p In Figs. 2 and 3 I illustrate a different embodiment of my invention. Here the bafile is formed by two plates 21 and 22 which are overlapped along the center or" the oven from front to rear. Eachplate is provided with a plurality of hooks. or eyes 23 which are adapted to engage the transverse members or" a rack 14 and'one plate has its front and rear end edges 2a bent up and 'over the'other plate so that the plate secthe rack free to slide laterally. Tue plates,

when inserted with the rack, are drawn close enough together to permit'th'eir insertion through the oven door opening. The operator then slides the plate sections apart laterally until their tapered ends enter and close the fines at. 'The holes 20 are provided in this plate as'in the baiile plate first described and these furnish a readymeans for grasping the plate sections to shift them laterally. The suspension vhool-rs 23 may be separately formed and attached to the plates or they may be stamped up from the plates. 1 I r In operation, either type of plate desired is'rnounted in the manner described so as to intercept the heat rising in the lines i and divert it into the oven space below the plate, causing it to flow; laterally until it can escape upwardly through the baille plate holes 20, thus bringing the heat radiating surfaces to thetop and bottom of the oven in the desired close relationship to the article to be cooked which is necessary for the economical use of fuel. 'Y'Vhile the effect of the baffle plate is of greater importance as used at theupper ports 2 by reason of bringthe battle forming the radiating top surface ot the oven closerto the food to be cooked.

Though I have described with great particularity the details of the embodiment of construed that I am limited thereto, as

changes inarrangementand substitution of equivalents may be madecby those' skilled in the invention herein shown, it is not to be the art without departing from the invention as defined in the appended claims.

Having thus described my invention, what 7 I claim as new and desire to secure by Let ters Patent, is 1* p 1. In combination with an oven. having side heat fines and oppositeinlet ports opening therefrom into the oven, of a bafiie attachment having 7 intermediate heat outlet penings and adapted .to be inserted through the oven door opening'andhaving extene sible parts mounted thereon and disposed and adapted to project. through said ports and intercept said flues, and meansirto mount said baille near the upper level of opposite inlet ports.

v 2. In combination with an oven having side heat fines and opposite inlet ports opening therefrom into the oven, of a baflie atmeans to suspend said baffle from saidguides in position to intercept the heat rising through the side heat flues near the upper level of a pair of opposite ports and direct it into the oven below the baffle.

In testimony whereof I affix my signature.

MAGDOUGALD DEXTER 

